Good shot. Bukavu is the third silverback Blackpool have had. The first one Kumba, was one of their first pair(later a trio)- he was sent away in adulthood as there was no breeding. Replaced with Jitu- another non-breeder who later went to Valencia into a male group. Finally with Bukavu(from Munich) and the two current females(half sisters from Apenheul), they were able to start a breeding group.
I have been to Blackpool only twice and seen both Kumba and Jitu- but not Bukavu.
I remember the Gorilla quarters being very roomy- although quite old now they are still very spacious.